CN201113522Y - Automatic switchover device for double loop power supply source - Google Patents
Automatic switchover device for double loop power supply source Download PDFInfo
- Publication number
- CN201113522Y CN201113522Y CNU2007201833766U CN200720183376U CN201113522Y CN 201113522 Y CN201113522 Y CN 201113522Y CN U2007201833766 U CNU2007201833766 U CN U2007201833766U CN 200720183376 U CN200720183376 U CN 200720183376U CN 201113522 Y CN201113522 Y CN 201113522Y
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- China
- Prior art keywords
- power supply
- output
- current source
- multifunctional digital
- relay
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- Expired - Fee Related
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Abstract
The utility model provides a double loop power supply automatic switching device which adopts a multifunctional digital meter with alarming function to control the switching between an independent power supply and other standby power supplies, when an accumulator battery of the independent power supply does not have enough quantity of electricity, the energy supply can be automatically switched to the standby power supplies; the multifunctional digital meter is used for monitoring the accumulator battery of the independent power supply system and controlling the starting of the standby power supplies, when the voltage of the accumulator battery is close to an under-voltage protection point, the multifunctional digital meter immediately starts the standby power supplies and ensures the standby power supplies is in a state of spinning reserve, the energy supply is automatically switched to standby power supplies at the moment of a current failure of the independent power supply. The double loop power supply automatic switching device has a simple structure in a control circuit, and stable and reliable operation.
Description
Technical field
The utility model relates to a kind of double return circuit power supply automatic switching control equipment, especially a kind of utilization has the electronic switching device that automaticallyes switch between two kinds of power supplies of multifunctional digital table control of warning function, be mainly used in independent power supply as main power supply and can not have field that outage takes place what, when the batteries electric weight in this independently power-supply system is not enough, can switch to other power supply power supply in moment.
Background technology
At present, generally being usually used in the mutual device for switching of two-way power supply mainly is the double-throw switch of manual mode and the two electric power transfer device of control mode able to programme, the former mainly is subjected to artificial factor bigger, only be applicable to the general occasion that power reguirements is not high, though the latter can realize reliable automatic switchover, but its cost is controlled and the programming relative complex than higher.
Summary of the invention
Simply be convenient to the automatic switchover that method of operating realizes that the two-way power supply is highly reliable in order to adopt, the utility model provides a kind of double return circuit power supply automatic switching control equipment, switching device shifter can not only be realized reliably switching to other power supply power supply from independent power supply moment automatically, and control is simple, need not the complicated program setting, working stability is reliable.
The technical scheme that the utility model adopted is: utilize the multifunctional digital table that has warning function to control the automatic switchover of independent power supply and other power supply; the voltage of independent current source batteries becomes the analog quantity input that suitable amplitude size offers the multifunctional digital table after by electric resistance partial pressure; the warning output contact of multifunctional digital table is connected the two ends of an electromagnetic relay coil and power supply; normally opened contact one end of electromagnetic relay links to each other with the output of independent current source; the other end links to each other with the control coil of a time-delay relay; the normally opened contact of time-delay relay is connected on the startup loop of other stand-by power supply; its alarm point can be arranged on under-voltage protection point by the button on the multifunctional digital table a little more than independent current source; the output of independent current source and other stand-by power supply is connected on the normally opened contact and normally-closed contact of output control relay; and providing output for load by moving contact, the action of output control relay is controlled by the output of independent current source.When the voltage of batteries is put near under-voltage protection; the multifunctional digital table produces the output of reporting to the police; be connected the electromagnetic relay adhesive of its warning output contact; the action of electromagnetic relay control time-delay relay; make time-delay relay connect the start-up circuit of other stand-by power supply; after stand-by power supply machine startup work; time-delay relay disconnects start-up circuit immediately; this moment, the stand-by power supply machine was in hot stand-by duty; when the voltage of batteries arrives under-voltage protection point; the independent current source outage, the contact of output control relay discharges, and makes circuit change stand-by power supply machine power supply state at once over to.When preventing that the stand-by power supply power supply state from switching back the independent current source power supply state because the unstable voltage that independent current source occurs in start-up course, time-delay relay of serial connection in the control loop of output control relay can fully guarantee to return after the voltage of independent current source is stable again and cut.
The beneficial effects of the utility model are, can be easy to realize quick switching between independent current source and other stand-by power supply machine with existing simple Devices, handoff procedure is reliable and stable, the alarm point of multifunctional digital table can carry out difference setting according to the height of accumulator battery voltage, applicable to the power-supply system of multiple voltage grade, fitting operation is simple.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Accompanying drawing is circuit theory diagrams of the present utility model.
Among the figure: meter is the multifunctional digital table, Ai is the plan amount input of multifunctional digital table mould, K1, K2 are the warning output contact of multifunctional digital table, and BAT is a batteries, and R1, R2 are divider resistance, P is an accessory power supply, POW1 is an independent current source, and POW2 is standby, and OUT is an output port of power source, J1, J2 are electromagnetic relay, and JT1, JT2 are time-delay relay.
Specifically execute mode
In the drawings, the voltage of batteries BAT is by resistance R 1, R2 is added in the analog quantity input Ai of multifunctional digital table after according to certain ratio dividing potential drop, K1, K2 is the warning output contact of multifunctional digital table, control coil one end of electromagnetic relay J1 is connected on the electrode of accessory power supply by K1 and K2, the other end directly links to each other with another electrode of accessory power supply, control coil one end of time-delay relay JT1 extremely links to each other with the output B of independent current source, the other end extremely links to each other with the output terminals A of independent current source by the normally opened contact of J1, time-delay relay JT1 has the time delayed turn-off function, and its normally opened contact is connected in the startup loop of stand-by power supply; Accessory power supply P is mainly the multifunctional digital table and J1 provides working power, and its input directly is connected the two ends of batteries; The output B of stand-by power supply POW1 extremely directly with after the output B of stand-by power supply POW2 extremely links to each other is connected on the output port, the output terminals A utmost point of POW1 is connected on the normally opened contact of electromagnetic relay J2, the output terminals A utmost point of stand-by power supply POW2 is connected on the normally-closed contact of electromagnetic relay J2, the moving contact of J2 is connected on the output port, control coil one end of J2 extremely links to each other with the output B of POW1, the other end extremely links to each other with the output terminals A of POW1 by the normally opened contact of time-delay relay JT2, control coil one end of time-delay relay JT2 extremely links to each other with the output B of independent current source, and the other end extremely links to each other with the output terminals A of independent current source.Under normal circumstances; independent current source provides power supply by the normally opened contact of J2 to load; when the multifunctional digital table detects batteries generation under-voltage protection in the independent electric power supply; warning output contact K1 and K2 closure; J1 gets electronic work; JT1 also moves simultaneously, and its normally opened contact closure is connected the stand-by power supply running work that makes with the startup loop of stand-by power supply POW2, and the normally opened contact of JT1 will disconnect after stand-by power supply POW2 starts.After independent current source generation under-voltage protection, its output end voltage disappears, JT2 and J2 power-off restoration, and stand-by power supply POW2 provides power supply by the normally-closed contact of J2 to load.Independent electric power supply promptly can be the inverter system with exchange way work, also can be the DC power system with the work of direct current mode.Equally, stand-by power supply promptly can be the fuel electric generator electric supply installation, also can be other inverter electric supply installation, also can be city's electrical network electric supply installation.
Claims (2)
1. double return circuit power supply automatic switching control equipment, it is characterized in that: with the multifunctional digital table control independent current source that has warning function and the switching of other stand-by power supply, the accumulator battery voltage of independent electric power supply is connected to the analog quantity input of multifunctional digital table by divider resistance, the warning output contact of multifunctional digital table is connected between the coil and power supply of an electromagnetic relay, the normally opened contact of electromagnetic relay is connected between the output of the control coil of a time-delay relay and independent current source, the normally opened contact of time-delay relay is connected on the start-up circuit of stand-by power supply, and the operating state of other stand-by power supply is being controlled in the connecting and disconnecting of the warning output contact of multifunctional digital table.
2. a kind of double return circuit power supply automatic switching control equipment according to claim 1, it is characterized in that: the output of independent current source is connected on the normally opened contact of output control relay, the output of stand-by power supply is connected on the normally-closed contact of output control relay, the control coil of output control relay is connected the output of independent current source by the normally opened contact of a time-delay relay, and the time-delay relay control coil directly links to each other with the output of independent current source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201833766U CN201113522Y (en) | 2007-09-26 | 2007-09-26 | Automatic switchover device for double loop power supply source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201833766U CN201113522Y (en) | 2007-09-26 | 2007-09-26 | Automatic switchover device for double loop power supply source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201113522Y true CN201113522Y (en) | 2008-09-10 |
Family
ID=39965267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201833766U Expired - Fee Related CN201113522Y (en) | 2007-09-26 | 2007-09-26 | Automatic switchover device for double loop power supply source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201113522Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471163A (en) * | 2018-05-31 | 2018-08-31 | 广西玉柴机器股份有限公司 | A kind of alternate power autocast control device |
-
2007
- 2007-09-26 CN CNU2007201833766U patent/CN201113522Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108471163A (en) * | 2018-05-31 | 2018-08-31 | 广西玉柴机器股份有限公司 | A kind of alternate power autocast control device |
| CN108471163B (en) * | 2018-05-31 | 2023-10-27 | 广西玉柴机器股份有限公司 | Automatic switching control device for standby power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080910 Termination date: 20160926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |